Paper-bag machine



(No Model.)

4 SheQts.Sheet 1.

O. W. ALLISON.

PAPER BAG MACHINE.

Patented May 27, 1884 N PETERS. Pnom-Limo m w. Washington. D. c.

(No Model.) 7 4 Sheets-Sheet 2.

O. W. ALLISON.

PAPER BAG MACHINE.

No. 299,097. Patented May 27. 1884,.

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N. PETERS. Phomlilho n hur. wmm mn, DV 0.

(No Model.) .4 SheetszSheet 3.

0. ALLISON.

PAPER BAG MACHINE. I

No. 299,097. Patented May 27., 1884.

(No Model.) r 4 Sheets-Shet 4.

0. W. ALLISON.

PAPER BAG MACHINE. No. 299,097. Patented May 27; 18-84.v

UNrTen STATES PATENT Orrrcie.

OSCAR WV ALLISON, OF ROCHESTER, NEW YORK, ASSIG-N OR TO THE UNION PAPERBAG MACHINE COMPANY, OF PHILADELPHIA, PENNSYLVANIA.

PAPER-BAG MACHINE.

SPECIFICATION forming part of Letters Patent No. 299,097,dated May 27,1:884. Application filed March 3, 1883. (N0 model.)

To all whom it may concern:

Be it known that I, OSCAR W. ALLISON, a citizen of the United States,residing in the city of Rochester, county of Monroe, and State of NewYork, have invented certain new and useful Improvements in Paper-BagMachines, fully described and represented in the following specificationand the accompanying drawings, forming a part of the same.

The present invention relates to a mechanism for the manufacture ofsatchel-bottom paper bags, and particularly'to a mechanism of thegeneral construction of that shown in an application for United StatesLetters Patent filed by me in the Patent Office on February 8, 1881.

It is the object of the present invention to effect certain improvementsupon the mechanism shown in said' application, whereby it will besimplified in construction and rendered more rapid, reliable, andsatisfactory in operation.

To these ends the invention consists in various details of constructionand combinations of parts, all of which will be hereinafter fullyexplained, and particularly pointed out in the claims.

In the accompanying drawings, Figure 1 is a side elevation of amechanism of the general structure of that shown in my prior applicationbefore referred to, but modified so as to embody the presentimprovements. Fig. 2 is a plan view of the same. verse vertical sectiontaken upon the line at a: of Fig. i. Fig. 4 is a diagrammatic sectionshowing the principal working parts. Fig. 5

- is a plan view of the devices for forming the diamond fold. Figs. 6 to13, inclusive, are diagrams illustrating the various operationsperformed by the machine in making a bag.

. In the machine shown in the present case, as in that in theapplication referred to, the web of paper from which the bags are to bemade is first converted into a tube. In this operation the web 99 is ledfrom a roll, (not shown,) and after passing around suitable guide andtension rolls, as 97, is led beneath the former 98, around which it isfolded and pasted by devices (not shown) operating in the usual andwell-known manner. The former 98 is made of considerable thickness,

Fig. 3 is a transso that as the tube leaves the end of the former itssides will be separated some distance from each other, and the paper atits edges will not be creased or bent abruptly. As the completed tubeleaves the former 98, it passes between a pair of feeding-rolls, 95 96,one of which, 95, as shown, is cut away, so as to have a bearing surfaceof less length than the width of the tube, so that the tube will passbetween said rolls without having its edges creased or broken down. Asthe end of the tube emerges from between the rolls 95 96,.it passesabove a stationary cutting-edge, 94, and enters and passes between thejaws 92 93 of one of the revolving 6 5 heads, which at that time will beadvanced slightly beyond the position shown in Fig. 4. The feeding-rolls95 96 are geared together in the usual manner, and are driven throughgears 90 91 from a gear, 88, secured to the main shaft 89 of themachine.

Secured to the shaft 89, upon the inside of the frame of the machine,are a pair of arms or carriers, 87, in the opposite ends of which are journaled apair of shafts, 85 86, upon which 5 are mounted the jaws 9293, constituting the revolving heads. The heads at the opposite ends ofthe arms 87 are exact duplicates; consequently a description of onewill. suffice for both. The jaw. 93 is rigidly secured to the shaft 86,and the jaw 92 is secured to a shaft, 85, the projecting ends of whichrest in open bearings formed in short arms 83, (see Figs. 1 and 3,)rigidly secured to the shaft'86, all as fully shown and described in myformer appli- 8 5 cation, before referred to. The shaft of the jaw 92 isprovided with suitable springs, (not shown,) which tend to hold the jawsnugly against the jaw 93, and the arms 87 are provided with cams 82,(see Figs. 2 and 4,) which, 0 as the head revolves, act upon the ends ofthe shaft 85, so as to open the jaws at the proper point to receive theend of the tube, as shown in Fig. 6. The shaft 86 is at one end providedwith a gear, 81, which, through an intermedi- 5 ate, 80, engages with amutilated stationary gear, 79, so that while the jaws 92 93 are beingcarried around the shaft 89 they are also intermittently rotated aroundthe shaft 86, the gear 79 being so proportioned that the jaws will makeone revolution around the shaft 86 while being carried once around theshaft 89,

and so mutilated that the revolution upon the shaft 86 takes place justbefore and after the tube enters the bite of the jaws.

To prevent the shaft 86 from turning in its bearings except at theproper time, the face of the gear 79 is provided with a mutilated disk,77, which, as soon as the gears 7980 pass out of engagement, is engagedby a locking projection, 78, upon the face of the gear 80, so that saidgear and the shaft 86 are securely locked in position until there-engagement of the gears 79 80.

All of the foregoing features being exactly the same as in the structureshown in my prior application, reference is made thereto for a more fulland complete illustration thereof.

The revolving heads, and also the mechanism by which they are operated,are also, as to their general construction, substantially the same asshown in my former Letters Patent No. 207,702.

The disk 77 and gear 79 are provided with an arm, 84, (see Fig. 1,) towhich is connected a rod, 75, which passes through the frame of themachine, and is provided with set-nuts 76, by which means they can beadjusted, so as to properly time the revolutions of the jaws 92 93 withrelation to the other parts of the apparatus. As in my formerapplication, the jaws 92 93 are each provided with a longitudinalrecess, 20, (see Fig. 3,) and with a folding-blade, 21, arranged tosweep across the face of said recess. In the present case, however, theblades 21, instead of being made-to reciprocate, are pivoted at the endsof the jaws, and are caused to sweep across the recesses 20 to fold downthe folds of the diamond by a simple oscillating movement. To accomplishthis movement of the blades they are provided with suitably-shaped arms22, which, as the arms 87 revolve, will be acted upon by stationary cams25, (see Fig. 2,) the blades being retracted by springs. (Not shown.)The tube having been passed between the jaws 92 93, as shown in Fig. 6,the latter will be advanced and rotated until the ends of the shaft 85pass off the cams 82, when the springs before referred to will close thejaws so as to hold the tube securely between them. By reason of thethickness of the former 98 and the formation of the feeding-roll 95, thetube will enter between the jaws in a some what expanded condition andwith its edges uncreased, so that when said jaws close upon it its mouthwill be caused to open, as shown in Fig. 7. As soon as the jaws havebeen closed, they will be held together while the bag is being formed bythe action of the cam projections 23, as described in my priorapplication.

1 Located just in advance of the cutting-edge 94 is a tension device,similar in construction to that shown in my former Letters Patent No.207 ,702? This device consists of a small roll, 26, which is supportedjust below the cutting-edge 94 in arms 27, secured to a rockshaft, 28, journaled in suitable bearings in the a side frames of the machine justabove the feeding-roll 95. The shaft 28 is provided with arearwardly-extending arm, 29, the end of which is acted upon by aspring, 30, which tends to throw the roll 26 forward and upward from theposition shown in Fig. 4. The shaft 28 is also provided with aforwardly-extending arm, 24, which, when depressed, is en gaged by aspring-catch, 31, so as to hold the roll 26 in the position shown inFigs. 1 and 4. As the arms 87 and jaws 92 93 continue to advance afterclosing upon the tube, a small inclined projection upon the face of thegear 81 will press the spring 31 outward, so as to release the arm 24and allow the spring 30 to throw the roll 26 upward against the tube, soas to keep the same taut, as shown in Fig. 7. As the arms 87 continue toadvance, the tube will be drawn downward across the knife-edge 94 and abag-length will be severed therefrom, and at the same time the roll 26will be drawn back to its normal position, (see Fig. 8,) where it willbe held by the catch 24 until again released, as just described. At orabout the time the blank is severed from the tube its leading end iscarried into position to be acted upon by the apparatus for forming thediamond fold, as shown in Fig. 8. This apparatus consists of a curvedforwardly-projecting arm, 32, which is attached to a yoke, 33, suspendedloosely upon the shaft of the roll 96, and a pair of arms, 34, which areattached to a rock-shaft, 35, in such position as to straddle the arm32. The arm 32 is provided upon its upper side with a swell or belly,36, just in front of which is located a hook, 37, the purpose of whichwill hereinafter appear. The arm 32 is further provided with a spring,38, which tends to hold the arm in its forward or raised position. Therock-shaft 35 is provided with a third arm, 39, which is acted upon by aspring, 40, so as to normally hold the arms 34 in their raised position,as indi cated in Fig. 8. As the jaws 92 93 arrive at the position shownin said figure, the rear ply of the partially-opened tube will passbeneath the hook 37, while the forward ply will pass above the ends ofthe arms 34. ,As the jaws continue to advance and rotate, the rear plywill be retained and drawn backward by the hook 37 while the arms 34,being pressed downward by the advancing jaws, will slide forward alongthe face of the jaw 92, carrying with them the forward ply, so that theend of the blank will be opened to diamond form, as shown in Fig. 9.\Vhen the arms have carried the jaws to about the position shown in Fig.9, the gears 79 80 will pass out of engagement, and the disk 77 andprojection 78 will come into engagement, so as to prevent the head fromfurther revolving upon the shaft 86. The diamond, after being formed, asjust described, will be kept distended and smooth upon the faces of thejaws by means of the presser-plates 41, which are located upon each sideof the arms 34, and so arranged that the faces of the jaws pass in closecontact therewith. As the completed diamond leaves the pressers 41, itwill receive suitable lines of paste from an ordinary paster, 54,mounted upon ashaft, 50, and receiving paste from a fountain-roll (notshown) in the usual manner. At or about the time the first blank isreceiving paste, as just indicated, the second pair of jaws, 92 93,carried at the opposite ends of the arms 87, will arrive in position toreceive the advancing end of the tube 98,which will then be seized bythose jaws, carried downward, severed from the tube, and opened todiamond form in the manner j ust described. The shaft 50, which, asalready explained, imparts motion to the paster, is provided with agear, 56, which is connected by an intermediate, 57 ,with a gear, 58,upon a transverse shaft, 59, the gear 58 being in turn connected by apair of intermediates,60 61,with the gear 88 upon the main shaft. Theshaft 59 is provided with a pair of collars or clips, 10, in which arefastened a pair of creasing-blades, 16. In the organization shown in myprior application herein referred to, these creasing-blades werearranged to oscillate so as to be projected against the points of thediamond carried upon the j aws 92 93,while in the present organizationthey simply rotate with but have no motion independent of the shaft 59.The collars 10 will be so adjusted upon the shaft 59 that as the jaws 9293,

carrying the diamond-folded blank, pass upward past said shaft theblades 16 will in sue cession strike the points of the diamond, therebycreasing said points and forcing their fold lines into the recesses 20,as shown in Fig. 10. Immediately after the blades 16 have creased thediamond, so as to cause the points to bend outward, as indicated in saidfigure, the onward movement of the arms 87 will carry the arms 22 intoengagement with the cams 25, thereby oscillating the blades 21 inwardacross the recesses 20, and folding the points of the diamond over ontoits body, as indicated in Fig. 11. By the time that the arms 22 havepassed off the cams 25, so as to allow the blades 21 to retract, thejaws 92 93 will have arrived in position to co-operate with thetuckingblade 18, which will then be advanced so as to strike the diamondupon its center and tuck it backward into the bite of the jaws 92 93,thereby pressing the freshly pasted and folded points against the bodyof the diamond, so as to set the paste, and at the same time folding thebottom to the form shown in Fig. 12. The blade 18, as in the structureshown in my prior application, is mounted to slide upon a pair ofoscillating arms,19, extending from a rockshaft, 62, said shaft beingprovided with a third arm, 64, the end of which carries a stud, 8, whichlies in the path of a cam, 66, secured to the face of a gear, 67, whichengages with the gear 60. The blade 18 is provided upon its under sidewith bearings 6, which permit the blade to slide freely along the arms19,

and is pivotally connected by a pair of rods, 9, ,with-a pair ofrock-arms, 7, extending from a transverse shaft, 63, said shaft beingprovided with athird rock-arm, 65, which is connected by a rod, 68, witha crank, 69, secured to the gear 90.

The various parts just described will be so timed with relation to eachother and to the arms 87 that as the latter carry the jaws 92 93 upwardfrom the point where the arms 22 leave the cams 25, the shaft 62 will berocked so as to carry the blade 18 along with said jaws, and at the sametime the shaft 63 will be rocked, so as to throw said blade outwardalong the arms 19 and cause it to enter be tween said jaws, as shown inFig. 12.. After the bottom of the bag has been properly folded, theshafts 62 63 will be rocked in the opposite direction, so as to retractthe blade 18 and carry it back to its normal position in time toco-operate with the jaws 92 93 upon the opposite ends of the arms 87,when they in turn arrive in proper position. As soon as the blade 18 hasoperated to make the cross-fold in the bag-bottom, as just described,the gears 79 80 will again come into engagement, and the jaws 92 93 willresume their revolution around the shaft 86, thereby carrying the endsof the shaft into engagement with the cams S2 and causing the jaws toopen. As soon as the jaws have opened sufficiently to release thecompleted bag, its projecting bottom end will be taken by theoscillating grippers 70, as indicated in Fig. 13, and withdrawn frombetween the jaws and carried into the bite of the tapes 71 72, to bedelivered from the machine. As the completed bag is thus withdrawn-frombetween the jaws, they will arrive in position to again receive theadvancing end of the tube 98, and so the operation will continue to berepeated, two blanks being severed from the tube and two bags completedat each revolution of the arms 87. The grippers 7 O are carried upon theend of an arm, 49, extending from the rock -shaft 63, the movements ofsaid shaft, already explained, giving to the grippers the proper rangeof travel to carry the bags from the jaws to the tapes.

The grippers are. operated to seize and release the bags at the propertimes, as follows: The forward jaw, 5, of the grippers is made rigidwith the arm 49, while the other jaw, 4, is pivoted to said arm, and isprovided with a rearwardly-extending rod, 15, supported in a bearing,12, upon the arm 49, and a spring, 14, the tendency of which is to holdthe jaw 4 in a closed position. The end of the rod 15 is provided with astud, 3, so positioned that it engages with a cam, 2, and a stud, 1, se

cured to the face of a plate, 13, supported upon the shafts 62 and'63.From this arrangement it will be seen that as the shaft 63 is rocked soas to carry the grippers toward the jaws 92 93, the stud 3 of the rod 15will pass upward along the inside of the cam 2, thereby pressing the rodagainst the tension of the spring 14 and opening the jaws4 5. As thegrippers arrive in position to take the bag,the stud 3 of the rod 15will pass off the upper end of the cam 2,thereby permitting the spring14 to contract, so as to close the grippers and seize the bag. As soonas the grippers have closed, the shaft 63 will be rocked in the oppositedirection, so as to draw the bag from between the jaws 92 98 and carryit to the tapes. As the arm 49 is raised, the stud 3 of the rod 15 willpass downward upon the outside of the cam 2, so that the grippers willremain closed until the bag has been carried between the tapes; but whenthe bag has arrived at that position the stud 3 will come into contactwith the stud 1, so that the spring 14will be expanded and the grippersopened. The arm 49 will continue its movement in the 1 same directionuntil the grippers have been carried so far forward as to pass below thetapes 72, thereby permitting the bag to pass unobstructedly forwardbetween the tapes. As the arm 49 again moves downward,the stud 3 willagain pass upward upon the inside of the cam 2, and so the operationwill be repeated.

The combination,with a thick-edged former, of a revolving head arrangedto grasp the blank and carry it to the diamond-iold-forming mechanism;also, the combination, with the revolving carrier, of the revolvingheads and cooperating diamond-fold-forming mechanism; also, thecombination, with the carrier, of the heads and cooperating opening,pasting, creasing, and folding mechanisms;

also, the combination,with the same, of mechanism for removing thecompleted bag; also, the combination,with the carrier and heads,of thecreasing-blades, also,the combination,with the carrier, of the jaws andthe folding-blades; also, the combination, with the carrier andheads,'of the tapes and oscillating grippers; also, the combination,with the carrier, of the jaws and tucking-blade; also, the combination,with the same, of the grippers, are not claimed herein, as these severalfeatures are claimed in my former application before referred to.

WVhat I claim is- 1. The combination,with the revolving arms or carriers87, of the revolving jaws 92 93 and the oscillating arm 32, having hook37, substantially as described.

2. The combinatiomwith the revolving arms or carriers 87, of therevolving jaws 92 93 and the oscillating arms 34, substantially as described.

3. The combination,with the revolving arms or carriers 87, of therevolving jaws 92 93, the oscillating arm 32, provided with hook 37, andthe oscillating arms 34, substantially as described.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing witnesses.

OSCAR W. ALLISON.

Witnesses: j

A. R. SELDEN,

H. (Pu-PHILLIPS.

